Perhaps you should try some spelling variations:
petriuuov » peteriuuov (Expand Search), petriiuuov (Expand Search), petruiuuov (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
petrv » peterv (Expand Search), petriv (Expand Search), petruv (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petruiuo (Expand Search)
petriuuo » peteriuuo (Expand Search), petriiuuo (Expand Search), petruiuuo (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop (((petriuuov OR petruv) OR petrv) OR ((peteru OR (petriuo OR petriuuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriuuov OR petruv) OR petrv) OR ((peteru OR (petriuo OR petriuuo)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petriuuov OR petruv) OR petrv) OR ((peteru OR (petriuo OR petriuuo)) OR petr)) o.s.*.